FAN1537DBX

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The FAN1537DBX is a dual low dropout linear regulator manufactured by Fairchild Semiconductor. It provides two independent output channels, each capable of delivering up to 1A of current. The device features fixed 3.3V output on one channel and an adjustable or fixed (2.5V/1.8V) option on the second channel. Designed for low voltage applications, it offers low dropout voltage characteristics and stable operation with low ESR output capacitors. The component includes on-chip thermal limiting protection and is housed in an SO-8 surface-mount package.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Dual output configuration providing independent regulation capabilities
• High current delivery capability of 1A per output channel
• Integrated thermal limiting circuitry for operational safety
• Optimized for low voltage transient response and minimum input voltage requirements

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Hard Disk Drives
• CD-ROMs and DVDs
• ADSL and Cable Modems
• Post regulators for switching supplies
• Motherboards requiring multiple supply voltages

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix designation against official datasheets to confirm pinout compatibility and electrical tolerances. Ensure the procurement source provides authentic Fairchild Semiconductor documentation. Cross-reference the package type and lead finish specifications with system design requirements before finalizing orders.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when dual isolated rails are required from a single regulator IC. It is suitable for systems needing simultaneous 3.3V and lower voltage generation. Consider the thermal performance and PCB layout constraints associated with 1A continuous current outputs. Verify that the input voltage range supports the desired dropout characteristics for the target application.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the FAN1537 series of dual low dropout linear regulators. The series is designed for efficiency in portable and computing applications. Fairchild Semiconductor developed these devices to address the need for compact power solutions in multi-voltage digital systems. The manufacturer was acquired by ON Semiconductor, which continues to support the product line.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Check for direct replacements within the same family such as the FAN1537DB. Verify pin-to-pin compatibility and electrical parameter equivalence before substitution.